Which of the Following Statements Are True?
A) in Some $\sigma ^ { 2 }$

question 21

Multiple Choice

Which of the following statements are true?

• A) In some experiments, different samples contain different numbers of observations. However, the concepts and methods of single-factor ANOVA are most easily developed for the case of equal sample sizes.
• B) The population or treatment distributions in single-factor ANOVA are all assumed to be normally distributed with the same variance \(\sigma ^ { 2 }\)
• C) In one-way ANOVA, if either the normality assumption or the assumption of equal variances is judged implausible, a method of analysis other than the usual F test must be employed.
• D) The test statistic for single-factor ANOVA is F = MSTr/MSE, where MSTr is the mean square for treatments, and MSE is the mean square for error.
• E) All of the above statements are true.

---

Definitions:

Shaft

The long, narrow, central portion of a long bone or hair, differing in structure or composition from the ends or the surrounding parts.

Bone Marking

Features on the surface of bones, such as ridges and notches, which serve as attachment points for muscles and ligaments.

Foramen

An opening, hole, or passage, often in bone, through which nerves or blood vessels may pass.

Diploë

Diploë refers to the spongy bone layer between the inner and outer layers of cortical bone in the skull, which houses marrow and blood vessels.